Engadget: You had to know that Nintendo's 3DS wouldn't be the only glasses-free 3D handheld for long. Our Chinese compatriots caught sight of a prototype device from Rockchip called the Supernova x1, performing some similar lenticular trickery to make images appear 3D. Exactly what display tech it uses remains a mystery, but we're told the Disney footage being displayed had to be "processed" in some way to make it appear 3D.